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ZUKIWORLD Discussion Forum => Suzuki 4x4 Forum => Topic started by: 90Stomper on March 14, 2005, 10:02:06 AM

Title: hesitation help PLEASE!!!
Post by: 90Stomper on March 14, 2005, 10:02:06 AM
i am getting HUGE hesitation when ever i move the peddle more that 1/4" at a time, to the point of it almost dying if i kinda punch it.  what i have tried:

change out and adjusted tp sensor - no help
changed out idle speed control sensor - no help
put in new fuel filter - helped about 50%
wax pellet put back in - no help high idle
   took back out and pluged - better idle still hesitates
changed out injector - no help
checked timeing - right on +20*
checked plugs and cleaned - no help
wires plugs cap rotar coil and vlines all new.

HELP!!!  this sucks.

could it be a loose timing belt, bad fuel presure reg, fuel pump?  since changeing the fuel filter helped it must be something having to do with the fuel? :-/ :'( :-[ >:(

thanks all!
Title: Re: hesitation help PLEASE!!!
Post by: locjaw on March 14, 2005, 10:17:55 AM
Im not a EFI expert but I would check fuel pressure. I dont know exactly what it is supposed to be but someone out here will
good luck with it
jason
Title: Re: hesitation help PLEASE!!!
Post by: TN_Tracker on March 14, 2005, 11:23:02 AM
Yep, sounds like the pump is having a hard time keeping up with the go-pedal.
Title: Re: hesitation help PLEASE!!!
Post by: 90Stomper on March 14, 2005, 01:39:08 PM
Quote
I would check fuel pressure


i am looking up how to do that right now.  anyone have experence checking fuel presure or changing out the pump?
Title: Re: hesitation help PLEASE!!!
Post by: TN_Tracker on March 14, 2005, 01:43:46 PM
This might help: http://www.autozone.com/servlet/UiBroker?ForwardPage=/az/cds/en_us/0900823d/80/1f/7d/a4/0900823d801f7da4.jsp
Title: Re: hesitation help PLEASE!!!
Post by: wildgoody on March 14, 2005, 04:38:10 PM
36 PSI for an 8V TBI engine,
should be close to that to 43
PSI depending on the EFI system
Title: Re: hesitation help PLEASE!!!
Post by: 90Stomper on March 15, 2005, 04:21:54 AM
cool, but, (always a but) where and how much is the guage ganna cost me,  i just looked up pumps at autozone  :o  very pricy.  was thinking about just taking out the pump and cleaning it first, what ya think?  maybe the inlet is pluged.... ???
Title: Re: hesitation help PLEASE!!!
Post by: mrfuelish on March 15, 2005, 04:40:19 AM
check your temp sensor and make sure your engine warms up all the way.(gauge comes off of the cold side.)
Title: Re: hesitation help PLEASE!!!
Post by: TN_Tracker on March 15, 2005, 07:52:57 AM
Quote
cool, but, (always a but) where and how much is the guage ganna cost me,  i just looked up pumps at autozone  :o  very pricy.  was thinking about just taking out the pump and cleaning it first, what ya think?  maybe the inlet is pluged.... ???


I'd get a garage to check the fuel pressure, it shouldn't cost much.
Title: Re: hesitation help PLEASE!!!
Post by: derekj on March 17, 2005, 05:14:37 PM
if changing your filter helped than you might want to remove the pump assembly and check that the strainer on the bottom of the pump is not plugged with crap - you could have got some bad gas maybe?